legatus

Each military campaign was assigned 1 legate (general or dux), though there was not a single commander-in-chief until Imperial times because a number of campaigns could be conducted simultaneously in different geographic areas. Legati were always aristocrats of the senatorial class, usually consuls or former consuls, since they had to hold at least…...

legatus

Latin, meaning: deputy, ambassador, envoy / commander of a legion
Found on http://archives.nd.edu/lll.htm

legatus

legate The men who filled the office of Legate were drawn from among the senatorial class of Rome. There were two main positions; the legatus legionis was an ex-praetor and the man in command of one of Romes elite legions, while the legatus pro-praetore was an ex-consular, who was given the governorship of a Roman province with the magisterial powe...
Found on http://www.roman-britain.org/military/military_glossary.htm

legatus

deputy, ambassador, envoy,
Found on https://www.math.ubc.ca/~cass/frivs/latin/latin-dict-full.html
No exact match found